i set the debug useflag to get proper backtraces for xbmc. these are very necessary for developers, if filing a bugreport for xbmc. see -> http://xbmc.org/wiki/?title=HOW-TO_Submit_a_Proper_Bug_Report according to -> http://www.gentoo.org/proj/en/qa/backtraces.xml it is necessary to compile a package with certain c/cxxflags to get debugging symbols. xbmc itself is enabled to produce crashlogs via gdb. basically there are two things to extend in the ebuild, only setting the debug useflag for xbmc isn't enough obviously. crashlogs just show me no debugging symbols. 1. if debug useflag is set, pull in sys-devel/gdb 2. if debug useflag is set, replace c/cxxflags with suitable flags atm i accomplished these two points with emerging gdb and setting custom c/cxxflags via the following methods: -> http://archives.gentoo.org/gentoo-portage-dev/msg_fac717b026ba37b4396b448f1152153e.xml -> http://gregarius.dropcode.net/demo/Planet_Gentoo/2009/08/01/Zhang_Le:_Setting_CFLAGS_on_a_per-package_basis my setup for xbmc: "cat /etc/portage/env/cflags_debug pre_pkg_setup() { local x for x in splitdebug ; do if ! has $x $FEATURES ; then elog "bashrc is adding $x to FEATURES for $PN" FEATURES="$FEATURES $x" fi done # elog "bashrc is removing \"-O2\" from CFLAGS/CXXFLAGS for $PN" # CFLAGS="${CFLAGS/-O2/}" # CXXFLAGS="${CXXFLAGS/-O2/}" elog "bashrc is removing \"-fomit-frame-pointer\" from CFLAGS/CXXFLAGS for $PN" CFLAGS="${CFLAGS/-fomit-frame-pointer/}" CXXFLAGS="${CXXFLAGS/-fomit-frame-pointer/}" if ! has -ggdb $CFLAGS ; then elog "bashrc is adding \"-ggdb\" to CFLAGS/CXXFLAGS for $PN" CFLAGS="$CFLAGS -ggdb" CXXFLAGS="$CXXFLAGS -ggdb" fi }" all in all a lot to do for the average user. therefore it would be nice to accomplish these goals on a more automated way within the ebuild itself. as far as i know this could be done with the helper functions provided by the flag-o-matic.eclass according to -> http://www.gentoo.org/proj/en/devrel/handbook/handbook.xml?part=2&chap=1 Reproducible: Always Steps to Reproduce: 1. set useflag debug 2. emerge xbmc-9999 3. initialize a crash 4. inspect ~/xbmc_crashlog_* Actual Results: no debugging symbols found Expected Results: proper debugging information
maybe setting c/cxxflags would be also possible with ./configure. according to its help: "To assign environment variables (e.g., CC, CFLAGS...), specify them as VAR=VALUE. See below for descriptions of some of the useful variables."
also it would be useful to have sys-devel/gdb in case that USE="debug" is set
(In reply to comment #2) > also it would be useful to have sys-devel/gdb in case that USE="debug" is set > i mean as a dependency that should be pulled in while setting USE="debug"
that is not how USE=debug works
(In reply to comment #4) > that is not how USE=debug works > hm, ok. anything else we could do to get proper crashlogs on gentoo?
